package com.qinghong.gulimall.order.web;

import com.qinghong.gulimall.order.exception.NoStockException;
import com.qinghong.gulimall.order.service.OrderService;
import com.qinghong.gulimall.order.vo.OrderConfirmVo;
import com.qinghong.gulimall.order.vo.OrderSubmitVo;
import com.qinghong.gulimall.order.vo.SubmitOrderResponseVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.concurrent.ExecutionException;

@Controller
public class OrderWebController {

    @Autowired
    OrderService orderService;

    /**
     * 去结算确认页
     * @param model
     * @param request
     * @return
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @GetMapping("/toTrade")
    public String toTrade(Model model, HttpServletRequest request) throws ExecutionException, InterruptedException {

        OrderConfirmVo confirmVo = orderService.confirmOrder();
        model.addAttribute("confirmOrder",confirmVo);
        // 展示订单确认页需要的数据
        return "confirm";
    }

    @PostMapping("/submitOrder")
    public String submitOrder(OrderSubmitVo vo, Model model, RedirectAttributes attributes){
        try {
            SubmitOrderResponseVo responseVo = orderService.submitOrder(vo);
            // 下单：创建订单 验证令牌 验证价格 锁库存

            // 下单成功来到
            if (responseVo.getCode()==0){
                model.addAttribute("submitOrderResp",responseVo);
                return "pay";
            }else {
                String msg = "下单失败";
                switch (responseVo.getCode()){
                    case 1:
                        msg += "防重令牌校验失败";
                        break;
                    case 2:
                        msg +="商品价格发生变化";
                        break;
                }
                attributes.addFlashAttribute("msg",msg);
                return "redirect:http://order.gulimall.com/toTrade";
            }
        }
        catch (Exception e){
            if (e instanceof NoStockException){
                String msg = "下单失败,商品无库存";
                attributes.addFlashAttribute("msg",msg);
            }
            return "redirect:http://order.gulimall.com/toTrade";
        }
    }
}
